SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('6099dd275011614b5b29b2fcee3a46a9','0','3.15.153.69','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714999314','board.php?boardid=628&page=1&daysprune=1000&sortfield=starter&sortorder=ASC&sid=034324a8aa8926534bc07656ed6d55d0','0','0','')
mysql error: Duplicate entry '6099dd275011614b5b29b2fcee3a46a9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 14:41
Script: /board.php?boardid=628&page=1&daysprune=1000&sortfield=starter&sortorder=ASC&sid=034324a8aa8926534bc07656ed6d55d0
Referer: http://wehrbauten.de/board.php?boardid=628&page=1&daysprune=1000&sortfield=starter&sortorder=ASC&sid=034324a8aa8926534bc07656ed6d55d0